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Finding the Fourth Proportional to 139,324.88, 209,017.56 and 45,827.12

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Solution

The fourth proportional to 139,324.88, 209,017.56 and 45,827.12 is: 68,750.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,324.88 : 209,017.56 = 45,827.12 : x
  2. Step 2: Convert to fraction form
    139,324.88/209,017.56 = 45,827.12/x
  3. Step 3: Cross multiply
    139,324.88x = 209,017.56 × 45,827.12
  4. Step 4: Simplify right side
    139,324.88x = 9,578,672,804.23
  5. Step 5: Solve for x
    x = 9,578,672,804.23/139,324.88
  6. Step 6: Final answer
    x = 68,750.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.